"And we have had no further contact with General Plo Koon. The absence of distress beacons indicates that his fleet was… that his fleet was destroyed, like the others. We are about to prepare a rescue mission."

―Anakin Skywalker, to Supreme Chancellor Palpatine and the Jedi High Council, following the loss of the Triumphant and the rest of Plo Koon's fleet — Listen(file info)[src]

The Triumphant and the rest of Koon's task force approach the Malevolence.

After the loss of Nune's fleet, Koon and the rest of the Jedi Council met with Supreme ChancellorPalpatine to discuss the growing Separatist threat. During the meeting, Koon volunteered to lead a strike force from the Triumphant and hunt down the Malevolence. Although Koon planned to stay in constant contact with nearby Republic forces during the operation, Palpatine and Jedi MasterMace Windu believed it was still going to be a very dangerous mission.[5] Koon's task of finding and eliminating the Malevolence was soon reported by the Republic's HoloNet News, and the Triumphant's participation was included in the report.[8]

After being dispatched on its assignment, Koon's task force, which consisted of the Triumphant and two other Venator-class cruisers, tracked the Malevolence to the Abregado system. The Republic fleet slowly approached the distant Malevolence, with plans to assault the enemy vessel. Within one of the Triumphant's command towers, Koon and Commander Wolffe contacted Jedi General Anakin Skywalker and his apprentice, Ahsoka Tano, who were stationed in the nearby Bith system, and updated the two on their situation. However, Skywalker informed Koon that he could not assist Koon's flotilla in the upcoming battle because Skywalker himself had been ordered to secure the Bith system. Shortly thereafter, their communications were cut off, a result of being jammed by the Malevolence.[2]

Aboard his Subjugator-class flagship, Grievous and the leader of the Separatist movement, CountDooku—who was present onboard at the time to observe the Malevolence in action—saw the arrival of the Triumphant and its support vessels as another opportunity to test the Malevolence's powerful ion pulse cannons. The new weapons were capable of disabling the deflector shields on any ship, leaving vessels completely defenseless and vulnerable to laser fire. Grievous moved the Malevolence into attack position and ordered his battle droid crew to charge the ship's port-side pulse cannon.[2]

The Triumphant is hit by the ion blast from the Malevolence.

Unable to direct laser fire at the Malevolence because it was out of range, the Triumphant and the rest of Koon's task force fell prey to the Malevolence's ion pulse assault. The Triumphant's crew braced for impact as the enemy's ion pulse hit the entire strike force, deactivating the Star Destroyers' shields and weapon systems. The Malevolence immediately moved in closer to the unprotected Republic fleet and fired at the Star Destroyers with its many turbolasers. Realizing that the battle was lost, Koon ordered the ship's clone trooper crew to its escape pods just as his fleet was torn apart, and a number of the Triumphant's crew survived by fleeing in the vessels' escape pods. Among the survivors were Wolffe, Koon, and two clonetroopers nicknamed "Sinker" and "Boost"; all four escaped in the same pod.[2]

After the obliteration of the Triumphant and the rest of Koon's flotilla, the remains of the three Star Destroyers formed a debris field around the Abregado system, with the surviving escape pods—lacking power, communications, and life support systems—floating around within the field. Not intending to leave any witnesses of the battle, Dooku dispatched a number of rocket battle droids aboard Droch-class boarding ships to eliminate any remaining Republic escape pods. All of the Triumphant's surviving crew members were killed by the Separatist teams, with the exception of the occupants of Koon's pod, who were able to defeat a battle droid patrol that attacked them. Koon's pod was soon rescued by Skywalker and Tano—who had come to investigate the situation at Abregado following their loss of contact with Koon's task force—aboard Skywalker's personal freighter, the Twilight.[2]

"Do you think we have a chance, General?""I don't believe in chance, Commander. I know if we work together, we will stay alive, and someone will find us."

―Wolffe and Plo Koon, following the destruction of the Triumphant[src]

Koon and Wolffe aboard the Triumphant

The Triumphant was the flagship of Jedi Master Plo Koon,[2] with Clone Commander Wolffe serving as the Star Destroyer's first officer.[6] The Triumphant was mostly crewed by the clone troopers of the Grand Army of the Republic, including the "Wolfpack,"[4] a close-knit squad[9] led by Wolffe that included Boost and Clone Sergeant Sinker.[4] When the Triumphant was destroyed by the Malevolence, most of the ship's crew was killed, and the few who did escape were dispatched by the Malevolence's pod hunters. The only exceptions were Koon, Wolffe, Boost, and Sinker, who escaped the Abregado system with Skywalker and Tano aboard the Twilight.[2]